i posted a pic of me wearin and smokin the gas mask.. basically they work like this

you just breath normal, the bong fills up and you just keep breathing normal and it milks it, finally it will end up cashing the bowl and the smoke will clear, but since its a steady breathing effort, you get less oxygen and you get hella fucked up with just inhaling smoke and shit..
nikweiser Reviewed by nikweiser on . Gas Masks How the hell do you use them? What are they? Can you make one? Rating: 5